Ashley, Ruth. <br/><br/>
Job control language 
Ruth Ashley, Judi N. Fernandez. 
 - 2nd ed. 
 - New York  Wiley  c1984. 
 - xi, 154 p.  ill.  26 cm. 
 - A Self-teaching guide A Wiley Press book .
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic digital computers--Programming--Programmed instruction.<br/>Job Control Language Computer program language--Programmed instruction.